#include "stm32f10x.h"                  // Device header

void Timer_Init(void)
{
	RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2 ,ENABLE);
	
	TIM_InternalClockConfig(TIM2);
	
	TIM_TimeBaseInitTypeDef TIM_TimeBaseInitStructure;
	TIM_TimeBaseInitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
	TIM_TimeBaseInitStructure.TIM_CounterMode = TIM_CounterMode_Up;
	TIM_TimeBaseInitStructure.TIM_Period =49990;
	TIM_TimeBaseInitStructure.TIM_Prescaler =7199;
	TIM_TimeBaseInitStructure.TIM_RepetitionCounter = 0;
	TIM_TimeBaseInit(TIM2,&TIM_TimeBaseInitStructure);
	
	TIM_ClearFlag(TIM2,TIM_IT_Update);
	
	TIM_ITConfig(TIM2,TIM_IT_Update,ENABLE);
	
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
	
	NVIC_InitTypeDef NVIC_InitStructure;
	NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =2 ;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
	NVIC_Init(&NVIC_InitStructure);
	
	TIM_Cmd(TIM2,ENABLE);
}

void TIM1_IRQHandler(void)
{
	if(TIM_GetITStatus(TIM1,TIM_IT_Update) == SET)
	{
	
		TIM_ClearITPendingBit (TIM1,TIM_IT_Update);
	}
}

